Gearing for machine-tools.



PATBNTBD SEPT.'18, 1906.

W. RUNGE. GBARING FOR MACHINE TOOLS.

APPLIUATION FILED FEB. 8. 1906.

4 SHEETS-SHEET 1.

W MM.

ATTORNEY I THE NoRRls PE1-:Rs co., wAsHmamN, n. c.

PATEN-TED SEPT. 18, 1906.

W. RUNGE. GEARING FOR MACHINE TOOLS.

. (Pv M APPLICATION FILED PEB. 8, 1908.

4 SHEETS-SHEET 2.

viv/MI No. 831,379. PATENTED SEPT. 18, v1906.

W. RUNGB. GEARING POR MACHINE TooLs.

APPLICATION FILED PEB. a. 1966.

' 4 SHEETS-SHEET s.

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PATENTED SEPT. 18, 1906.

W.. RUNGE. GEAR-ING FOR MAGHNE TOOLS.

APPLICATION FILED BILB. 1906.

4 SHEETS-SHEET 4.

STATES PATENT OFFICE..

WILLIAM RUNGE, OF SENECA FALLS, NEW YORK, ASSIGNOR 'lO THE SENECA FALLS MANUFACTURING COMPANY, OF SENECA FALLS, NEW YORK, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented sept. 18, 190e.

Application filed February 8, 19.06. Serial No. 300.095.

lb ttl whom t may concern.;

Be it known that 1, WILLIAM RUNGE, of Seneca Falls, in the county of Seneca and State of New York, have invented a certain new and useful Gearing for Machine-lools, of which the following is a specification.

My invention has for its object the production of a gearing for machine-tools which is particularly simple in construction and highly efficient in use, and to this end it consists in the novel combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is had tothe accompanyingv drawings, in which like characters designate corresponding parts in all the views.

Figure 1 is a plan of the head-stock of a lathe embodying my invention. Fig. 2 is an enlarged sectional View on line A A, Fig. 1. Fig. 3 is a sectional view, partly broken away and in elevation, on line B B, Fig. 2. Fig. 4 is a fragmentary view of the head-stock. Fig. 5 is an elevation looking tothe right of parts seen in Fig. 4. Fig. 6 is a plan of the operatmember, the carriage, and parts associated therewith. Fig. 7 is an end view of a portion of the detached operating member. Fig. 8 is an end view of the detached carriage.

This invention comprises a cone of gears 1, a tumbler-gear 2 for` cooperating with the cone of gears, a shift-ing frame 3, connected to the tumbler-gear, means for moving the shifting frame in a direction at an angle to the axis of the cone of gears, and thereby forcing the tumbler-gear into. and out of engagement with any one of the gears 1, and means for moving the shifting frame and the tumbler-gear along the cone of gears.

As illustrated, my invention is embodied in the head-stock of a lathe comprising a live spindle 4 and driving and speed-varying gearing 5; but as the parts 4 and 5 form no feature of my present invention description thereof is deemed unnecessary.

The cone of gears 1 transmits motion to suitable gearing for rotating a driven shaft, as thelead-screw. (Notshown.) Suchgearing, including gears 6, 7, and 8, Fig. 3,.which mesh with some of the gears 1, are loosely mounted on a shaft 9 and may be locked to said shaft by any desirable means.

. As seen in Fig. 2, the tumbler-gear 2 is driven by a gear 10, which is slidably mounted on a shaft 11 ,and is shiftable with the tura-n- :bler-gear 2. Said shaft 11 is arranged substantially parallel to the axis of the cone. of. v gears l and is actuated from the live spindle 4 in reverse directions by suitable gearing, including gears 12 and 13, Fig. 3, which are loosely mounted on Ithe shaft 11 and may b e alternately locked thereto by a clutch 14. The shifting frame. 3, which may be of any y erably provided with helical teeth 15, is supi ported on the shaft 1 1, and is adapted to. rock thereon at an angle to the axis of the cone of gears 1 for moving the tumbler-gear into. and out of engagement with said cone of gears. Usually the head-stock is inclosed in a suitl able case 16, which is formed with a s lot 12, Fig. 4, extending substantially parallel tothe axis of the cone of gears 1, and with sockets 18, provided along the slot 17 and corresponding to the gears 1, the number of the sockets being generally one less than the number of the gears 1. These sockets 18 are preferably provided in the exposed edge of a removable plate 19, forming part of the top of the case 16. The plate 19 and the contiguous portion of the top of the case are provided with an inner bearing-face 20, spaced apart from the teeth 15 of the shifting frame 3.

In the illustrated embodiment of my invention the shifting frame 3 is rocked on the shaft 11 by a rotary worm 21, which is arranged between the teeth 15 and the bearingface 2 O with its axis at an angle to the cone of gears 1, is engaged with said teeth, and is actuated by a rotary operating member 22, including a stem extending axially through the worm and journaled in a carriage 23 and a slide 24, said stem bein gmovable axially relatively to the worm and connected thereto` by any suitable means, as a key. As the operating member 22 is rotated in reverse directions the shifting frame 3 is correspondingly rocked on its axis and the tumbler-gear 2 is moved into and out of engagement with the prede- 5 termined gear 1.

Rotation of the operating member 22, serving to force the tumbler-gear into operative position, is limited by suitable means,

` desirable form, size, and construction, is. pref- IOO as a pin 25 on the carriage 23 and a shoulder 26 onthe operating member 22, the pin 25 being engaged by the shoulder 26 at the time the tumbler-gear is in operative engagement with one of the gears 1. Rotation of the operating member in the opposite direction is limited by any desirable means, as a stop 27 provided on the carriage 23 and projecting into an annular groove 28 in the operating member, and a shoulder 29, provided on the operating member 22 and movable into engagement with a face 30, Fig.' 8, of said stop. As best seen in Fig. 2, the shoulder 29 is norl `mally at` one side of its position assumed when engaged with the face 30 of the stop 27; but during the rotary movement of the operating member 22 for bringing said shoulder v29 into engagement with the face 30 of the stop 27 the operating member is moved axially by any suitable means, as a cam-face 31, coacting with the pin 25. A spring 32 serves to move the operating member axially in the lreverse direction when said member 22 is rotated in a direction for bringing the face 26 into engagement with the pin 25. When the operatin@r member is in its position assumed during the engagement of the tumbler-gear with one of the gears 1, the shoulder 29 is in engagement with an inner face of the stop 27 Aand serves to prevent endwise movement of the operating member against the action of the spring 32. On the contrary, when the operating member 22 has been moved to engage its shoulder 29 withthe face 30 of the stop 27 a-passage 33, extending lengthwise in the member 22 'and opening through one side of the groove 28, is alined with the stop 27 for permitting additional endwise movement of the operating member. To those skilled in the art it will be understood that the tumbler-gear is easily forced into operative position and is lirmly held in such position.

In the preferable construction of my invention the carriage 23 is guided by the case 16, being shown as extended into and guided by the slot 17 and as provided with a rib 34, guided in a way or groove 35, formed in the inner Jface of the plate 19, The carriage thus moves in a direction substantially parallel to the axis of the cone of gears 1. Movement of the carriage is prevented by any suitable means, as a locking-bolt`36, movable endwise relatively to the carriage and projecting into one of the sockets 18. Said locking-bolt .is formed with a tongue 37, projecting into and fitting the annular groove 28, this tongue beingL oi less de th than the groove in order to permit the s oulder 29 to move past said tongue during the rotation of the operating member.

When it is desired to withdraw the lockingbolt 36 from operative position, the member 22 is rotated until its shoulder29 is in engagement with the face 30 of the stop 27, thus valining the passage 33 with such stop. The 65 operating member may then be additionally moved axially sufliciently to withdraw the locking-boltffrom the socket 18 coacting therewith, whereupon the carriage 23, the operating member 22, and the tumbler-gear 2 may be shifted along the cone of gears 1 to the desired position. When the operating member is released, the spring 32 will move the same axially and cause the locking-bolt to enter the socket 18 alined therewith, thus preventing further movement of the carriage.

To those skilled in the art it will be apparent that the stop 27 when within the passage 33 -coacts with the walls of such passage to lock the operating memberfrom rotation and that it is impossible to rotate the operating member for moving the tumbler-gear into and out of engagement with the gears 1 while said member is in the position assumed during the movementlof the carriage and the tumbler-gear along the gears l1.` The carriage 23 is usually provided with an indicator 38, coacting with an index-plate 39 for informing the operator of the particular speed or feed for which the machine is set.

The slide 24 bears against the face 20 and is held Jfrom downward movement by the en gagement of the worm 21 with the teeth of the shifting frame 3. Said slide is movable relatively to the-carriage23, being guided in an opening 40 in the carriage extending in a direction at an angle to the axis of the gears 1. The lower portion of rthe slide 24 is formed with a lengthwise opening, which receives and closely its ,ther upper portion of the frame 3, Fig. 3, andconsequently when the slide is moved lengthwise of the axis of the cone of gears 1- the frame 3 is moved in the same direction with said slide. A suitable projection 41 is provided on the slide 24 and is movable in a camway 42, formed in .the inner face ofthe plate 19, said projection being usually journaled in the slidein order to have a turning movement relatively thereto to prevent binding of the parts. As the operating member and the carriage move along the cone of gears 1 the slide 24 and the worm 21 move with said operating member and carriage and also move at an angle to the direction of movement of said carriage, thus shifting the frame 3 and the tumbler-gear 2 along the gears 1 and simultaneously rocking the shifting frame and the tumbler-gear, so that irrespective of the position of the gear 2 the rotary movement of the operating member will be sufficient to engage the tumbler-gear with the gear 1 alined therewith.

The construction and operation of my in-. vention will now be readilyunderstood upon reference to the foregoing description and the accompanying drawings.

What I claim .is-

1. In a gearing for machine-tools, a cone IOO gears, a tumbler-gear for coperating with the cone of gears, a shifting frame connected to the tumbler-gear, a rotary operating mem-v ber arranged 'with its axis at an angle to the cone of gears, and means, between the shifting frame and the operating member, for moving the frame toward and from the axis of the cone of gears, substantially as and for the purpose described.

2. In a gearing for machine-tools, a cone of gears, a tumbleregear for cooperating with the cone of gears, a shifting frame connected to the tumbler-gear, a rotary operating member arranged with its axis at an angle tothe cone oi' gears, means, between the shifting frame and the operating member, for moving the frame toward and from the axis of the cone of gears, and means for limiting the rotation of' the operating member in one directiom substantially as and for the. purpose set forth.

3. In a gearing for machine-tools, a cone of gears, a tumbler-gear for cooperating with the cone of gears, a shifting frame connected to the tumbler-gear, a rotary operating member, means, between the shifting-frame and the operating member, for moving the frame relatively to the cone of gears, a stop, and means for coacting with the stop to limit the rotation of the operating member in one direction, the last-mentioned means being movable into and out of position to coact with the stop. to, limit such rotation, substantially as and for the purpose specied.

4. In a gearing for machine-tools, a cone of gears, a tumblengear for cop erating with the cone of gears, a shifting frame connected to the tumbler-gear, a rotary operating member, means, between the shifting frame and the operating member, for moving the frame relatively to the cone of gears, means for limiting the rotation of the operatingmember in one direction, 'a stop, and means for coacting with the stop to limit the rotation of the operating member in the opposite direction, the last-mentioned means being movable into and out of position to coact with the stop to. limit the rotation of the operating member in said opposite direction, substantially as and for the purpose described.

5. In a gearing for machine-tools, a cone of gears, a tumbler-gear for cooperating with the cone of gears, a shifting frame connected to the tumbler-gear, a rotary operating member, means, between the shifting frame and the operating member, for moving the frame relatively to the cone of gears, a stop, means for coacting with the stop to. limit the rotation of the operating member in one direction, the last-mentioned means being movable into and out of position to coact with the stop to limit such rotation, and means for moving the operatingmember axially to bring said last-mentioned means into position to coact with the stop. to. limit such rotation, sub.-

stantially as and for the purpose set forth.

6.. In a gearing forv machine-tools, a cone of gears, a tumbler-gear for cooperating with the cone of gears, a shifting frame connected to the. tumbler-gear, a rotary operating member, means, between the shifting frame and the operating member for moving the frame relatively tol the cone of gears, a stop,means for coacting with the stop to limit the rotation of the operating member in one direction, the last-mentioned means being movable into and out of position to coact with the stop. to limit such rotation, and means for moving the oper-ating member axially relatively to the shifting frame to bring said last-mentioned means into position tol coact with the stop to limit such rotation, substantially as and for the purpose specified.

7. In a gearing for machine-tools, a cone of gears, a tumbler-gear for cooperating with the cone of gears, a shifting frame connected to the tumbler-gear, a rotary operating member, means, between the shifting frame and 'the operating member, for moving the frame relatively to the cone of gears, a stop, means for coacting with the stop to, limit the rotation of the operating member in one direction, the last-mentioned means being movable into and out of position to coact with the stop to. limit such rotation, means for moving `the operating member axially in one direction during the rotation thereof and thereby bringing said last-mentioned means into, position to. coact with the stop. to limit such rotation, and a spring for moving the operating member axially in the opposite direction, sub.- stantially as and for the purpose described.

8.. In a gearing for machine-tools, a cone oi gears, a tumblergear for copcrating with the cone of gears, a shifting frame connected to the tumbler-gear, a rotary operating member, means, between the shifting frame and the operating member, for moving the frame relatively to the cone of gears, astop, means for coacting with the stop. to limit the rotation of the operating member in one direc. tion, the last-mentioned means being movable into and out of position to coact with the stop to limit such rotation, means for moving the operating member axially to bring said last-mentioned means into position to coact with the stop to limit such rotation, and means for preventing said axial moveme-nt of the. operating member, substantially as and for the purpose set forth.

9. In a gearing for machine-tools, a cone of gears, a tumbler-gear for cooperating with' the cone of gears, a shifting Jframe connected to the tumbler-gear, a rotary operating member, means, between the shifting trame and the operating member, for moving the frame relatively to the cone ot gears, a stop., means for coacting with one face oi the stop to limit IOO IOS

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the rotation. of the operating member in 'one direction, the last-mentioned means .being movable axially into and out Aof position to coact with said face to limit such rotation, and being movable into and out of position to coact with another face of the stop for preventing axial movementof the operating member in one direction, and means for moving the operating member axially during. the rotaT tion thereof and thereby bringing the secondmentioned means into position to coact with the first-mentioned face of the stop, substantially as and for the purpose specified.

10.' In a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating with the cone of ears, a shifting frame connected to the tumb er-gear, arotary operating member, means, between the shifting frame and the operating member, for moving the frame relatively tothe cone of gears,.means for limiting the rotation. of the operating member in one direction, a stop, means on the operating member for coacting withthe stop to limit the rotation of the operating member in the opposite direction, the operating member being movable axially to bring said means thereon into and out of position to coact with the stop to limit the rotation of .the .operating member in said opposite direction, means for moving the operating member axially during,

the rotation thereof, and means for preventing said axial movement of the operating member, substantially as and for the'purpose described.A

11. In a gearing for machine-tools, a cone 'of gears, a tumbler-gear for .coperating with the cone of gears, a shifting frame connected to. the .tumbler-gear; arotary operating member, means, between theshiftingframe .and the operating member,l for moving the frame relatively to the cone of. gears, means for limiting the rotation of the operating member in one direction, a stop, means on the operating memberfor coacting withthe stopto limit the rotation of the operating :member in the opposite. direction, the operating member being". movable axially to. bring said means thereon into and out of position to coact with the stop. to limit the rotation of the operating member in said opposite direction, means for moving: the operating member axially in onev direction'. during the rotation thereof and thereby bringing said means on the operating member into position to coact with they stop to limit the-rotationv of the operating member. in. saidoppo'site direction, a spring for moving the operating member axially in the opposite direction, and means for preventing axial movement of the operating member, substantially as and for the purpose set forth.

12. In a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating with the cone of gears, a shifting frame connected to the tumbler-gear, and a rotary worm for the cone ofv gears, a pivoted shifting frame connected to the tumbler-gear and provided with teeth, and a rotary member coacting with the teeth for moving the shifting frame relatively to the rotary member, substantially4 as and for the purpose described.

14. In a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating with the cone of gears1 a pivoted shifting frame connected to the tumbler-gear and provided with teeth, and a rotary worm arranged with its axis at. an angle to the cone of gears and coacting. with the teeth for moving the shifting frame relatively to the rotary worm, substantially as and for the purpose set forth.

15. In a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating with the cone of gears, a shifting frame connected to the tumbler-gear, a rotary worm for moving the shifting frame, and a member for actuating the worm, said member being movable axially relatively to the worm, substantially as and for the purpose specified.

16. lIn a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating with the cone of gears, a pivoted shifting frame connected to the tumbler-gear and provided with teeth, a rotary worm arranged with its axis atv an angle to the cone of gears and vcoacting withtheteeth `for moving'the shifting frame relatively to the rotary worm, and a rotary member for-actuating the worm, said member being arrangedwith its axis substantially coincident with the axis of the worm and being movable axially relatively to the worm, substantially as and for the purpose described.

. 17. In a gearing forimachine-toola a cone of gears, a tumbler-gear for coperating with the cone of gears, a 'shifting frame connected to the tumbler-gear, a rotary .worm'for mov- 'ing the shifting frame, a rotary member for actuating the worm, and means for moving said member axially during the rotation thereof, substantially as and for the purpose set forth.

18. In a gearing for machine-tools, a cone of gears ,"a tumbler-gear for coperating with the cone of gears, a shifting frame connected to the'tumbler-gear, an operating member movable along the cone of gears, and means, between the shifting frame and the operating member, for moving the frame with the operating member along the cone of gears, and for moving the frame relatively to the operating member in a direction at an angle to the axis of said cone of gears, substantially as and for the purpose specified.

19. In a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating with IOO IIO

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the cone of gears, a shifting frame connected to the tumbler-gear, an operating member movable in a direction substantially parallel to the axis of the cone of gears, and means, between the shifting frame and the operating member, for moving the frame along the cone of gears, and for moving the frame relatively to the operating member in a direction at an angle to the axis of said cone of gears, substantially as and for the purpose described.

20. In a gearing for machine-tools, a cone of gears, a tumbler-gear for cooperating with the cone of gears, a shiftingframe connected to the tumbler-gear, an operating member movable along the cone of gears,means, between the shifting frame and the operating member, for moving the frame along the cone of gears, and means for moving the frame relatively to the operating member in a direction at an angle to the axis of the cone of gears, and during the movement of the frame along said purpose set forth.

21. In a gearing for machine-tools, a cone of gears, a tumbler-gear for cooperating with thecone of gears, a shifting frame connected to the tumbler-gear, a rotary operating member movable along the cone of gears, means, between the shifting frame and the operating member, for moving the frame along the cone of gears, means for moving the frame relatively to the operating member in a direction at an angle to the axis of the cone of gears, and during the movement of the frame along said cone of gears, and means for moving the frame relatively to the operating member during the rotation of said member, substantially as and for the purpose specified.

22. In a gearing for machine-tools, a cone of gears, a tumbler-gear for cooperating with the cone of gears, a shifting frame connected to the tumbler-gear, arotary operating member movable along the cone of gears, means, between the shifting frame and the operating member, for moving'the frame along the cone of gears, means for moving the frame relatively to the operating member in a direction at an angle to the axis of the cone of gears, and during the movement of the frame along said cone of gears, means for moving the frame relatively to the operating member during the rotation of said member, and means for locking the operating member from rotation during the movement thereof along the cone of gears, substantially as and for the purpose described.

23. In a gearing for machine-tools, a cone of gears, a tumbler-gear for cooperating with the cone of gears, a shifting frame connected to the tumbler-gear, an operating member movable along the cone of gears and movable at an angle thereto, means, between the shifting frame and the operating member, for moving the frame with the operating member yalong the cone of gears, and means for preventing the movement ofthe operating member along the cone of gears,the last-mentioned means being movable from its operative position by the operating member when moving at an angle to the cone of gears, substanto the tumbler-gear, an operating member movable along the cone of gears, means, be-

tween the shifting frame and the operating member, for moving the frame with the operating member along the cone of gears, and

for moving the frame relatively to the operat- Ling member in a direction at an angle to the axis of said cone of gears, and means for preventing the movement of they operating member along thecone of gears, substantially as and for the purpose specified. cone of gears, substantially as and. for the l 25. In a gearing for machine-tools, a oo ne of gears, a tumbler-gear for cooperating with the cone of gears, a shifting frame connected to the tumbler-gear, an operating member movable along the cone of gears, and also movable axially, means, between the shifting frame and the operating member, for moving the frame with the operating member along the cone of gears, and means for preventing the movement of the operating member along the cone of gears, said means being movable from its operative position by the operating memberwhen moving axially, substantially as and for the purpose described.

26. In a gearing for machine-tools, a cone of gears, a tumbler-gear for cooperating with the cone of gears, a shifting frame connected to the tumbler-gear, a rotary operating member movable along the cone of gears, and also movable axially, means, between the shifting frame and the operating member, for moving the frame along the cone of gears, means for moving the frame relatively to the operating member in a direction at an angle to the axis of the cone of gears, and during the movement of the frame along said cone of gears, means for moving the frame relatively to the operating member during the rotation of said member, and means for preventing the movement of the operating member along the cone of gears, said means being movable from its operative position by the operating member when moving axially, substantially as and for the purpose set forth.

27. In a gearing for machine-tools, a cone of gears, a tumbler-gear for cooperating with the cone of gears, a shifting frame connected to the tumbler-gear, a rotary operating member movable along the cone of gears, and also movable axially, means, between the shifting frame and the operating member, for moving the frame along the cone of gears, means for moving the frame relatively to the operating IOO IIO

member in a direction at an angle to the axis stantially as and for the purpose specified.

28. In a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating with the cone of gears, a shifting Jframe connected to the tumbler-gear, a rotary operating member movable along the cone of gears, and also movable axially, said member being formed with an annular groove and With a length- Wise passage opening through one side of the groove, a stop normally projecting into the groove and arranged at one side of the passage, means carried by the operating member and coacting With the stop to limit the rotation of the operating member and thereby aline the passage with the stop for permitting the movement of the stop into the passage upon the axial movement ofthe operating member, and means for preventing the movement of the operating member along the cone of gears, said means being movable from operative position When the operating member is moved axially, substantially as and for the purpose described.

29. In a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating with the cone of gears, a shifting frame connected to the tumbler-gear, a case, a carriage guided by the case, and means, between the shifting frame and the carriage, for moving the frame along the cone of gears and for moving the Jframe relatively to the carriage in a direction at an angle to the axis of said cone of gears, substantially as and for the purpose set forth.

30. In a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating with the cone of gears, a shifting frame connected to the tumbler-gear, a case, a carriage guided by the case and connected to the shifting frame for moving the latter, an operating member journaled in the carriage, and means, between the operating member and the shifting frame, for moving the frame relatively to the operating member, substantially as and for the purpose speciiied.

31. In a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating With the cone of gears, a shifting trame connected to the tumbler-gear, a case, means supported by the case and movable in a direction substantially parallel to the axis of the cone of gears and movable in a direction at an angle to said axis, and means connecting the shifting Jframe to the first-mentioned means,

substantially as and for the purpose described.

32. In a gearing for machine-tools, a cone of gears, a tumbler-gear Jfor coperating With the cone of gears, a shifting frame connected to the tumbler-gear, a slide movable along the cone of gears and also movable at an angle thereto, said slide being connected to the shifting frame for moving the same along the cone of gears, and means carried by the slide for moving the shifting frame relatively to the slide, substantially as and Jfor the purpose set forth.

33. In a gearing for machine-tools, a oase having a bearing-tace, a cone of gears, a tumbler-gear for coperating With the cone of gears, a shifting frame connected to the tumbler-gear and provided With teeth spaced apart from the bearing face, a carriage guided by the case along the cone of gears, a slide movable With the carriage and movable relatively thereto at an angle to the axis of the cone of gears, the slide bearing against said face of thecase, and a rotary Worm movable With the slide and coacting With the teeth of the shifting frame, substantially as and for the purpose specified.

84. In a gearing for machine-tools, a case having a bearing-face, a cone of gears, a tumbler-gear for coperating With the cone of gears, a shifting frame connected to the tumbler-gear and provided With teeth spaced apart from the bearing -face, a carriage guided by the case along the cone of gears, a slide movable With the carriage and movable relatively thereto, the slide bearing against said face of the case, a rotary Worm movable With the slide and coacting With the teeth of the shifting frame, and a rotary operating member for the Worm, said member being journaled in the carriage and the slide and extending axially relatively to the Worm, substantially as and for the purpose described.

35. In a gearing for machine-tools, a cone of gears, a tumbler-gear for coperating With the cone of gears, a shifting frame connected to the tumbler gear, a carriage movable along the cone of gears, a slide movable with the carriage and movable relatively thereto at an angle to the cone of gears, said slide being connected to the shifting trame for moving the same along the cone of gears, a Worm movable with the slide and connected to the shifting frame for moving the same relatively to the slide, an operating member journaled inthe carriage and slide and extending axially relatively to the Worm, means for limiting the rotation of the operating member in either direction, means for moving the operating member axially in one direction, a spring for moving the operating member axially in the opposite direction,

IOO

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IIS

means for preventing the movement of the l In testimony whereof I have hereunto 1o carriage, connections between the last-mem l signed my name, in the presence of two attioned means and the operating member for testing witnesses, at Syracuse, in the county moving said means from operative position I of Onondaga, in the State of New York7 this when the operating member is moved axially I 2d day of February, 1906.

in one direction, and means for locking` the WILLIAM RUNGE.' operating member from' rotation during the Witnesses: movement of the carriage, substantially as S. DAVIS,

and for the purpose set forth. l E. K. SEEMILLER. 

